Dielectric control of the behaviour of ion-exchange resins
Résumé
Complex-impedance variations of the ion-exchange resin DOWEX 50X8 with the type of counterion allow one to follow the Cu2+/H+ and Ca2+/Na+ exchange reactions without chemical analysis of solutions. Frequency and ionic strength effects are specified. This method is effective for following the Na+/K+ separation by displacement of Ca2+ ions.